Filter cartridge



FIG. 1 is a front perspective view of a filter cartridge, showing my newdesign;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof; and,

FIG. 4 is a side view thereof.

The broken lines, showing portions of a filter cartridge, are includedfor the purpose of illustrating environmental structure and form no partof the claimed design.

The ornamental design for a filter cartridge, as shown and described.